She later tweeted an apology to Jarrett. “I am truly sorry for making a bad joke about her politics and her looks. I should have known better. Forgive me-my joke was in bad taste,” she wrote.

Comedian Wanda Sykes, who had worked as a consulting producer on the show, had already announced she would not be returning after Barr’s tweet. A source close to Sykes denied a report that she demanded that ABC cancel the show.

In her first comments after the Barr’s tweet and the ensuing backlash, Jarrett told MSNBC that Disney’s chairman called her and told her, before the company’s public announcement, that ABC was cancelling Rosanne.

“This should be a teaching moment,” Jarrett told MSNBC.

Barr was once known for her left-wing views, which played out on the show during its original run. The character of Roseanne Conner was a factory-organizing feminist, and the show represented the concerns of a Midwest, working-class family that rarely caught a break. Its anti-racist, pro-LGBT politics reflected Barr’s worldview; in 2012, she ran for president on the Green Party ticket.

But on Twitter, Barr started to express another side of her beliefs. She began tweeting anti-Muslim, pro-Zionist views and retweeting far-right conspiracy theories, most infamously Pizzagate, which implicated Hillary Clinton and her campaign chair John Podesta in a child sex trafficking ring. She also revealed herself to be a Donald Trump supporter, to the surprise of some of her fans.

ABC announced the show’s revival in May 2017 and said it would reflect US political divisions after Trump’s election. Later in the year, Barr’s adult children took control of her Twitter feed, deleted her past tweets, and changed her password, she said during a press conference in January.

Barr, however, regained control over her Twitter account before the show’s premiere and recommenced giving a voice to pro-Trump views, particularly the fringe conspiracy theory known as “The Storm” or QAnon. In late March, she accused David Hogg, a survivor of the Parkland shooting, of giving a Nazi salute, for which she apologized.

But nearly anything goes on her Twitter feed, including anti–George Soros conspiracy theories (one of which caused Chelsea Clinton to clap back at her), pro–Julian Assange views, and continuous airings of QAnon grievances.

Comparing Jarrett to an ape proved to be the final straw for ABC. (It also should be noted that ABC does not own Roseanne, and therefore it makes money only from the ads it sells during the show, not from streaming or foreign sales.)

From Channing Dungey, President of ABC Entertainment: "Roseanne's Twitter statement is abhorrent, repugnant and inconsistent with our values, and we have decided to cancel her show."There was only one thing to do here, and that was the right thing.